Feitz schmidt am



(No Model.)

F. SCHMIDT 8v HOLZBEGHER.

vCLAY TILE.

IPansenzl Aug. 2

5 .l s s t n 4l ATTORNEY.

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UNITED STATES PATENT OFFICE.

FRITZ SCHMIDT AND MARTIN HOLZBECHER, OF OPPELN, PRUSSIA, GERMANY.

CLAY TILE.

SPECIFICATION forming part ofv Letters Patent No. 245,227, dated August2, 1881,

Application filed January 31, 1881. (No model.)

To all lwhom it may concer/lt:

Be it known that we, FRITZ SCHMIDT and MARTIN HoLzBEcHER, both subjectsof the German Empire, and residents ot' Oppeln, in the Province ofSilesia and Kingdom of Prussia, Germany, havey invented a new and usefulImprovement in ClayTiles, which improvementis fully set forth in thefollowing` specification, reference being had to the accompanyingdrawings, in which- Figure 1 is a perspective View of a block of clayand a blade or cutter which may be employed to slicev the block. Fig. 2is a perspective view ot' the block of cla'y sliced 0r cnt into tileshapes or plates in condition to be dried and baked or burned. Fig. 3 isa perspective View of one of the tiles.

Similar letters of reference indicate corrosponding parts in the severalfigures.

Referring to the drawings, A represents a block of clay, B the slicedshapes or plates, and C a blade, which may be employed tocut or slicethe block A.

In ,carrying out our invention we take properly-workedclay of the bestquality and pro- .dnce therefrom, by means of a press or Inachine,blocks of given size, and divide them, by means of a cutting apparatus,into a number of thin plates, which, without beingremoved one fromanother, are then carefully dried and afterward burned in kilns. By thismethod of forming, drying, and burning exactly plain and even plates areproduced, because during the drying period, and with the laying aside,all warping and casting are made impossible, and because warping andcasting, while drying, are avoided in consequence of the total weightnopremature drying of the edges, and of course no unequal shrinkage, isoccasioned, and also, within the burning period, in consequence of theattraction of the surfaces, the

same conditions take place with the block consisting of single plates asif the block consisted of one piece only. Furthermore, the highesttemperature for burning is allowed, and the separation of the plates onefrom another after burning is easily accomplished. The burned plates arenow 'entirely impregnated with tar or other similar substances, wherebythey are made water-tight and have imparted to them an elasticity ofthehighest degree, thus avoiding brittleness.

The plates are fixed to the rooil by means of nails, the holes whereofare punched through the plates either in their soft state, beforedrying, by means of a punching apparatus, or at'- ter the finishing, bymeans ot' a proper drill.

We are aware that it is not new to mold tiles in such manner that thetiles, though well separated, are connected by small tins, whereby,

when the tiles are baked, they may be broken one from another at thefins, and we therefore disclaim such features. l

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent of the United States, is

y The method of producing clay tiles, consisting in forming .a Inass ofworked clay into a block, slicing or cutting the same into a number ofthin plates, and then drying and burning the sliced block withoutseparating the plates or slices, the plates or slices thus susrainin geach other during the drying and burning, substantially as and for thepurpose set forth.

FRITZ SCHMIDT. MARTIN HOLZBEGHER. Witnesses:

HEINRICH Bans-Iron, J osEPH KRUBY.

